Journal of Animal Science and Technology

Korean Society of Animal Sciences and Technology (한국축산학회)
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Amount of Telomeric DNA on Pig Lymphocytes by Quantitative Fluorescence in situ Hybridization

양적형광접합보인법(Q-FISH)에 의한 돼지 백혈구 세포의 텔로미어 함량 분석

  • Sohn, Sea-Hwan (Department of Animal Science and Biotechnology, Jinju National University) ;
  • Jung, Hyun-Jin (Department of Animal Science and Biotechnology, Jinju National University) ;
  • Choi, Duk-Soon (Department of Animal Science and Biotechnology, Jinju National University)
  • 손시환 (진주산업대학교 동물생명과학과) ;
  • 정현진 (진주산업대학교 동물생명과학과) ;
  • 최덕순 (진주산업대학교 동물생명과학과)
  • Published : 2008.08.01
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Abstract

The amount of telomeric DNA was quantified across different breeds(Landrace, Duroc, Yorkshire and Berksire), at different ages(90 days old and 180 days old) and among sexes(male and female) in pigs raised at the Performance Testing Station of Korea Swine Association, Jinkyo, Korea. The telomeric DNA amount was quantified by Quantitative Fluorescence In Situ Hybridization(Q-FISH) using a porcine telomeric DNA probe on interphase nuclei of lymphocytes. Analysis revealed that the amount of telomeric DNA on the pig lymphocytes was found to decrease with age. The quantity of telomeres significantly differed among breeds at 90 days of age. The colored breeds such as Berkshire and Duroc had higher amount of telomeric DNA than the Yorkshire and Landrace breed. In addition, the amount of telomeric DNA in male lymphocytes was significantly higher than that of females. In the correlation coefficients between the telomere quantity and their productive traits; average daily gain, loin percent and index value were positively correlated, whereas body length, feed efficiency and back fat thickness correlated negatively. However, the correlation coefficients were very low and not significant. Therefore, this study suggests that the amount of telomeres on lymphocytes can be considered as a physiological marker but not as a productive marker in pig.

연구에서는 돼지의 세포 분화 및 활성적 특이성과 개체의 성장, 노화의 생물학적 특성을 구명하고자 국내 대표적인 종돈을 대상으로 telomeric DNA probe를 이용한 양적형광접합보인법(Q-FISH)으로서 백혈구 세포의 연령 별, 품종 별, 성 별 텔로미어 함량을 분석 고찰하고, 텔로미어 함유율과 개체 별 각 생산 능력과의 연관성을 검토하고자 하였다. 본 연구에 공시된 품종은 대한양돈협회 제2종돈능력검정소에서 검정 사육된 Yorkshire, Landrace, Duroc 및 Berkshire종 암수 100두 이상으로서 분석 결과, 돼지의 연령이 증가함에 따라 유의한 텔로미어 함유율의 감소를 나타내었고, 품종 간에 있어서도 유색 종이 백색 종에 비해 유의적으로 높은 텔로미어 함유율을 보였으며, 성 간에도 수컷이 암컷에 비해 높은 텔로미어 함유율을 나타내었다. 한편 각 개체 별 능력검정 성적과 텔로미어 함유율 간의 상관관계를 분석한 바 일당 증체량, 정육율 및 선발지수와는 정(+)의 상관을 보이고, 체장, 사료 요구율 및 등지방 두께와는 부(－)의 상관을 보여 선발 지표로서 매우 바람직한 양상을 보이나 이들 간의 상관계수가 낮고 또한 모든 계수가 유의성이 없는 것으로 분석되어 각 경제형질과 개체의 텔로미어 함유율 간에 큰 연관성이 없는 것으로 나타났다. 이상의 결과들을 종합하여 볼 때 텔로미어 함유율이 돼지의 생리 표지로서 활용은 가능하나 생산능력의 표지로서 이용하기에는 다소 어려움이 있는 것으로 사료된다.

Keywords

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